Structural Engineering and Mechanics

  • 제19권5호
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  • Pages.519-533
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  • 2005
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerical study on the influence of mesomechanical properties on macroscopic fracture of concrete

  • Zhu, W.C. (Laboratory of Numerical Test on Material Failure, School of Resource and Civil Engineering, Northeastern University) ;
  • Tang, C.A. (Laboratory of Numerical Test on Material Failure, School of Resource and Civil Engineering, Northeastern University) ;
  • Wang, S.Y. (Laboratory of Numerical Test on Material Failure, School of Resource and Civil Engineering, Northeastern University)
  • 투고 : 2004.03.24
  • 심사 : 2004.12.28
  • 발행 : 2005.03.30
⟨ 이전 논문 다음 논문 ⟩

초록

The numerical simulations on the influence of mesoscopic structures on the macroscopic strength and fracture characteristics are carried out based on that the concrete is assumed to be a three-phase composite composed of matrix (mortar), aggregate and bond between them by using a numerical code named MFPA. The finite element program is employed as the basic stress analysis tool when the elastic damage mechanics is used to describe the constitutive law of meso-level element and the maximum tensile strain criterion and Mohr-Coulomb criterion are utilized as damage threshold. It can be found from the numerical results that the bond between matrix and aggregate has a significant effect on the macroscopic mechanical performance of concrete.

키워드

참고문헌

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